成分对MgO-Al2O3-C耐火材料抗侵蚀性能的影响

doi:10.3969/j.issn.1005-3026.2015.09.012

东北大学学报:自然科学版 ›› 2015, Vol. 36 ›› Issue (9): 1269-1272.DOI: 10.3969/j.issn.1005-3026.2015.09.012

成分对MgO-Al₂O₃-C耐火材料抗侵蚀性能的影响

赵树茂，梅国晖，张玖，谢植

(东北大学信息科学与工程学院，辽宁沈阳110819)

收稿日期:2014-07-30 修回日期:2014-07-30 出版日期:2015-09-15 发布日期:2015-09-14
通讯作者: 赵树茂
作者简介:赵树茂(1983-)，男，辽宁沈阳人，东北大学博士后研究人员；谢植(1957-)，男，辽宁沈阳人，东北大学教授，博士生导师.
基金资助:
国家自然科学基金重点资助项目(2013ZCX01)；国家自然科学基金资助项目(61473075).

Effects of Composition on Corrosion Resistance of MgO-Al₂O₃-C Refractory

ZHAO Shu-mao， MEI Guo-hui， ZHANG Jiu， XIE Zhi

School of Information Science & Engineering， Northeastern University， Shenyang 110819， China.

Received:2014-07-30 Revised:2014-07-30 Online:2015-09-15 Published:2015-09-14
Contact: ZHAO Shu-mao
About author:-
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摘要/Abstract

摘要： 除工作环境外，原料配比对MgO-Al₂O₃-C材料抗侵蚀性能具有重要影响.采用不同杂质含量的电熔镁砂原料，按照不同C含量和Al₂O₃含量制备MgO-Al₂O₃-C试样.通过转动试样浸渣方法测得不同试样在富CaO熔渣中的侵蚀速率，从而研究了成分对抗侵蚀性能的影响.结果表明抗侵蚀性能随着镁砂杂质含量的增加而迅速降低，随着碳含量以及Al₂O₃含量的增加而先增加后降低.过多的Al₂O₃导致了熔渣黏度下降，而过多的碳导致了空隙率增大.根据上述结果，在富CaO熔渣中MgO-Al₂O₃-C材料理想的Al₂O₃质量分数为10%~30%，理想的C质量分数为10%~20%.

关键词: 镁铝碳, 抗侵蚀性能, 动态侵蚀实验, C含量, 骨料溶解

Abstract: The proportion of raw materials has an important influence on corrosion resistance of MgO-Al₂O₃-C refractory besides working conditions. MgO-Al₂O₃-C samples were prepared with different type of fused magnesia and various amounts of Al₂O₃ and graphite. Their corrosion rates in CaO-rich slag were investigated by rotating the samples in the molten slag. The effect of composition on the corrosion resistance of MgO-Al₂O₃-C refractory was studied. The results showed that the corrosion resistance decreases as the magnesia’s impurity increases. And with the increase of Al₂O₃ and graphite content， the corrosion resistance increases firstly and then decreases. Excessive Al₂O₃ results in viscosity decrease of slag， and excessive graphite results in porosity increase. Thus， for MgO-Al₂O₃-C refractory that used under CaO-rich slag， the ideal Al₂O₃ content is 10%~30% and the graphite content is 10%~20%.

Key words: MgO-Al₂O₃-C, corrosion resistance, dynamic corrosion test, carbon content;aggregate dissolution

中图分类号:

TB35

赵树茂，梅国晖，张玖，谢植. 成分对MgO-Al₂O₃-C耐火材料抗侵蚀性能的影响[J]. 东北大学学报:自然科学版, 2015, 36(9): 1269-1272.

ZHAO Shu-mao， MEI Guo-hui， ZHANG Jiu， XIE Zhi. Effects of Composition on Corrosion Resistance of MgO-Al₂O₃-C Refractory[J]. Journal of Northeastern University:Natural Science, 2015, 36(9): 1269-1272.

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成分对MgO-Al₂O₃-C耐火材料抗侵蚀性能的影响

Effects of Composition on Corrosion Resistance of MgO-Al₂O₃-C Refractory

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